Some investors assume that crunching the numbers and predicting market movements is the key to building a healthy portfolio. However, accurately pre-empting market movements is almost impossible. In reality, the difference between success and failure in investing often comes down to psychology and behaviour.

The way you respond to uncertainty and economic upheaval is crucial. If you let panic take over, you could make suboptimal decisions, ultimately harming your ability to generate sustained growth.

The recent 2025 Budget was a prime example of this.

Read on to learn how uncertain times affect investor behaviour and why it’s important to stick to your plan.

The lead-up to the Budget saw a record-breaking period for stock market outflows

There is always speculation prior to a fiscal event, but the Budget in November 2025 attracted more attention than any other in recent memory.

For months beforehand, newspapers published rumours suggesting all kinds of tax increases and legislative changes, many of which never happened. The media also leaked the actual contents of the Budget before the chancellor made her official announcement.

All this uncertainty caused panic among investors, and many rushed to cash out of the stock market.

According to Calastone, between June and November 2025, UK investors sold £10.39 billion worth of equity fund holdings (stocks and shares). This is the longest and most severe selling period on record.

In November 2025 alone, outflows totalled £3.02 billion, making it the second-worst month on record after October 2025.

However, the data also shows that outflows stopped on 26 November, the day of the Budget, and inflows resumed on the following three days.

Investors rushed to “safe” options after selling equities

The figures from Calastone show that, as well as selling equities before the Budget, many investors moved to options that they perceived to be “safer”, such as bonds.

For instance, in November 2025, money-market funds – which largely purchase short-term debt, including bonds – saw record inflows of £1.25 billion. This beat the previous record of £995 million seen in October 2025.

While these investments may carry less risk than stocks and shares, they also typically deliver lower returns. As such, investors who reacted in this way may not see as much growth as they would have achieved by simply holding their investments before and after the Budget.

Stock markets continued to grow despite panic caused by the Budget

Investors may have predicted that the Budget would cause stock market volatility and cashed out their investments to prevent losses. However, data shows that the markets rose despite fears about the Budget.

Figures from the London Stock Exchange (LSE) show that the FTSE All-Share – an index comprising a large number of UK companies – grew by 15.25% between 1 December 2024 and 1 December 2025.

While there was a small dip before the Budget, the index gained value every day from 24 to 28 November.

This suggests that, despite the apprehension, investors didn’t need to sell their shares, and by doing nothing, they would have seen positive returns.

While they can buy back into the markets now, they will have missed out on potential growth during the period when they were not invested.

It is important to take a long-term approach to your investments

The 2025 Budget is only one example of how investors might panic during uncertain times and sell shares prematurely. If you fall into this trap, you could harm your returns, making it more difficult to achieve your financial goals.

Periods of market volatility are typically short-lived, and your investments should eventually bounce back and continue growing. That’s why it’s important to take a long-term approach to your investments, holding them for a period of at least five years, so you can ride out any short-term fluctuations.

This can be difficult, especially in the face of so much media noise warning of market crashes or pushing the next big investment opportunity. Fortunately, we offer guidance and reassurance during difficult times and manage your investments carefully. As a result, you can remain calm and generate sustained long-term growth.

Get in touch

We can discuss any concerns you might have about your investments.

Please contact us at hello@ardentukstg.wpenginepowered.com or call or WhatsApp us on 01904 655 330. As an award-winning financial advice company with advisers included in the 2025 VouchedFor Top Rated guide, we can assure you that we’re a bona fide company providing excellent advice and high-quality service.

Please note

This article is for general information only and does not constitute advice. The information is aimed at individuals only.

All information is correct at the time of writing and is subject to change in the future.

The value of your investments (and any income from them) can go down as well as up and you may not get back the full amount you invested. Past performance is not a reliable indicator of future performance.

Investments should be considered over the longer term and should fit in with your overall attitude to risk and financial circumstances.